Molding apparatus



L. D. KAY

MOLDING APPARATUS April s, lso.

Filed Jan. 30, 1928 l Patented Apr. 8, 1935 -LLoYn D. KAY, or LosANGELEs'cALIFoRNIA MOLDING APPARATUS Application filed January 30,V1928. -Serrial No. 250,602.

This invention relates to molding apparatus and the invention isapplicable in connection with the equipment used for molding wheels.

trucks have become very popular. The hubs of these cast wheels must ofcourse conform to the axle design of the particular automobile trucksfor which they are intended, but the rims of these wheels maybe ofpa fewdifferent types for all trucks. In other words it isfrequently desirableto use l the same type of rim with diiferent typesof'hubs.

The general object of this invention is to provide a pattern of simpleconstruction which can be readily modified tor enable the Y 'centralportion ofthe pattern to be changed as desired to produce wheels withdifferent types of hubs. v

These wheels may be very conveniently 29 molded with molding machinesand in the type of molding (machine employed for this purpose the copeof the mold is mounted on 4the inverting yoke of the molding machinelOne of the objects of theginventionis to pro- 525 vide a simpleconnectionl for securing the cope to this'inverting, yoke which willenable the copes of the liaslrs to be quickly Secured in place withoutnecessitating the removal of any bolts and at the same-time to provide aconnection which will maintain itself intact when the inverted yoke isturned over.

The invention contemplates the use of a face plate corresponding to eachpart of the flask, that is to say, there is a face plate cor# 5responding to the drag and another face plate pattern is removablyattached to the plate.

By changing this central portion thedesign of the hub ofthe finishedwheel can be al- Cast steel wheels for automobile tered as desired.This, of course, entails tlw use of a removable center for each patternsection. One of the objects of my invention is to construct the patternin such a way as to prevent any possibility of the center sec- 5 tionsof the patterns being .substituted for eachother and wrongly placed,that is to say, my object is to provide a` construction which willinsure that the hub pattern correspondingto one sideof the'wheel will beplaced on theproper side of the wheel.

Further objects of the invention will appear! hereinafter. l

The invention consists in thenovel parts and combination of parts to bedescribed hereinafter,.all ofi which contribute to produce an eliicientmoldingapparatus;

In the drawing Figure l is a plan showing the pattern: for the rim' cfawheel secured to its face plate but with the central portion Vof thepattern removed. In this view a corner of the plate is brokenaway.

Figure 2 is a view similar to Figure -1 but showing the completepattern. corresponding to this plate. In other words this view shows therim ofthe pattern and also shows the central portion of the pattern setcentrally in the rim.

Figure 3 is avertical section througha cope and passing through thecenter of the face plate. This is an ideal section that is to say, itshows two ofthe radial portions of the pattern vas though they werediametrically opposite to Veach other.

Figure 4 isa View similar to Figure 3 but showing a section through theother face plate which carries the other half of the pattern and thisview shows the drag of the flask in the position it has when the patternis about to be drawn.

Figure 5 'is a vertical section through a portion of the mold which maybe formed by practicing my invention.

Figure 6 is a diagrammatical side elevation illustrating the invertingyoke of a molding machine and particularly illustrating theconstructionof the connection which I employ for attaching la asksection to it.

Figure 7 is a sectional' plan taken about on the line 7-7 of Figure 6v-andfurther illustrating the connection Which I employ for connecting asectionv of the flask to the inverting yoke ofthe molding machine.

In practicing the invention I provide a face plate 1 oi' square form inthe present nstance. On the face of this plate I attach a rim pattern 2which is permanently secured by means of bolts 3 such asvillustrated inFigure` 3. This rim pattern 2 may have short radial extensions 4 Whichcorrespond to the spokes of the inishedwhee'l. 2 I show the completepattern corresponding to this plate. In order to complete the`pat= ternI attach a pattern tcenter or hub, portion 5 which has radial extensions6 corresponding to the extensions 4 on the These extensions 4 and 6 meettogether at points 7 located ata given radius `from the center 8 oftheplate. At these points 7 the two meeting extensions 4 and Gpreera-blyhave inclined faces as indicated at :9 in Figure The central portion 5is removably attached to the plate by means 'of :a through bolt 10located atthev center of the plate'l;

In for-ming the mold the plate letorms the bottom of the copellfwhicli-.is rammed with sand in the space'12 after which acever 13 isapplied and temporarily held clamps 14. The cope is 'then turned overand the plate 1 With the pattern-attachedto itfis drawn. The pattern isformed with a* core print at the centerfand Withfafn annular core print16 around its rim.

Referring to Figure 4,I provide another tace plate 17 similar to theface plate 1 to' Which I permanently `attach a rim pattern 18 by meansof Asuitable bolts-19. This pattern is provided With a removable centerpattern or section 20 similar to the hub portion 5 already described.The center portion20 '1a-nd the rim 18 have radial extensions likeradialextensions 4 and 6 which cooperato` form a complete pattern Jforone-half of each spoke. The center portion 20 is heldin place removablyby removable bolt 21 located at the center of plate 17. In formingy themold iny this lhall of the pattern,theprocedure is 'similar to thatdescribedin connectionfwith the other half, that is to say the plate'lis used to torni the bottoi'nol the drag 22,-`the-space 23 within thedrag being rammedvwith sand. A cover 24 is then applied together withclamps 25 and the drag is thenrinverted intothe `position in wvl-lichitV isnshowvn infliger-e 4i The clamps are then removed and the patternis drawn. 'The central lportion of the pattern center 20 is providedWith-a print fand any other necessarywcore prints arecrrried on the rim18.

Y The radial extensions :2 7 of eeter-'section 20dt1nite byinclinedjzoinits 28 to e Corresponding :extensions of the .rim :section18. I `construct the Jpattern ina-ny sui-table man-- nerfso thatthehubipertion 5 will' netrnatch .up wibhthe rim portion 18,.and sethatthe In Figure hub portion 20 Will not match up with the rim pattern 2.For this purpose the joints 28 are all at the same radius from the axisof the center bolt 21. The dimension A as indicated in Figure 3 isdiierent from the dimension a as indicated in Figure 4. In other Wordsthe joints 9 are at a diferent radius fromk the center of the patternthan the joints 28. By reason of this it becomes impossible for themolders to accidentally substitute ahubportion for one side of the Wheelfor the hub portion that should go at the other 'side of the Wheel, thatis to say, the Vpattern sections can .only be put together with theproper sections matching each other.

Thisprevents -any possibility ot the Wheels being cast with the hubs areversed and Wrong position. l

Afterthe drag vand cope have beenprepared as described and the patternsWithdrawn, then the proper core such as thecore 29 is formedand placedimposition between the drag and the cope as indicated in .Figure 5. Inthis View 30 indicatesthe cast Wheel lying in themold. Y e

l' Then the molding is to be done in a molding machine 31 such `asindicated .inigure 6, I provide an improvement for acilitating theattachmentoi-one of the parts of thetlask, for example the copel totheinverting `yoke 32 of the machine. For this purpose I,- provide theinverti-ng yoke with ya specially lconstructed fitting 33 Which isattach-edzto the body of the inverting:arm, and the underside of thisfitting as illustrated in Figure 6 is providedvvith a tapered .tongue`34. 'The `inverting yoke y3,2"is mounted to rotate on .afhorik zontalaxis passingthrough..bearings 35 and l the Wideyend 36 of the tongue(see Figure is xlocated on the side toward which thefinverting yokeswings when bringing `.the .cope down to `its lowest position. VTheplate lof the cope is2 provided with a fitting 37 which has a dovetailgroove 38 in it and this .dov-etailed groove lits the dovetailedV.tongue 36. In other wor-ds, the dovetailed tongue operates as a Wedgein the dovetailed groove, and the cope can be yattached to the inverting-arm simply by sliding it onto the armwwith -vthe tongue 34 in thegroove lVhen the inverting arm 32 is rotated down from thev positi'on inwhich it is shownin Figure 6, the direction of rotation will be fromabove down- 'Wardlyzas viewed in Figure 7 that, is, toward the yobserveras viewed in Figure. LHence the .cope will not .dislodge itself duetoits ovv-n Weight .but its Weight Will tend to tighten it on theAtongue34. In .other Words, Ipv-ijovide .an interlocking .connectionbetween the fittingv 33 and-the cope l that. fis tapered in a directionto .prevent theeope from. falling off when'the yoke '32 iis rotated downlnerfgithe elevated 'position' in which it shown in-Figure .lpthat isto-saygfthe yoke 32shousld Ymere toward fthe observer inFigure It isunderstood that the embodiment of the invent-ion described herein isonly one of the many embodiments this invention may take, and I do notWish to be limit-ed in the practice of the invention, nor in the claims,to the particular embodiment set forth.

1. In molding apparatus for molding wheels or the like in a flask, apattern having a plate in combination With an annular pattern membercorresponding to the rim`or" the Wheel permanently Vattached to the sideof the plate, and acentral pattern member removably attached to theplate corresponding to the central part of the Wheel and matching withthe annular pattern member to formV joints on radial lines to form acomplete pattern for the drag of the mold, a second pattern having aplate in combination With a second annular pattern member correspondingto the rim of the Wheel permanently attached to the side of the secondnamed plate, and a second central pattern member removably attached tothe second named plate corresponding to the central part of the Wheeland mat-ching with the second named annular pattern member to formjoints located on radial lines from the center oi the pattern to form acomplete pattern for the cope of the mold, said tirst named centralpattern member and said second named rim member being constructed sothat theyfwill not match together to form joints of the pattern, andsaid second named central pattern member and said first named annularpattern member being conon a radius from the center of the annular`pattern member, said pattern members cooperating to form a completepattern for the drag or cope of the mold.

t. In molding apparatus, thecombination of a molding machine having aninverting yoke 'for supporting and inverting a cope or drag, and mountedfor rotation on a substantially horizontal axis, a drag or cope ot aflask adapted to be attached to the said yoke, said yoke and the side ofsaid flask having an interlocking tongue and groove connection taperedso that the Wide end ot the taper is disposed on the side ofthe yoketowards which the same revolves on its axis of rotation, whereby saidinterlocking connection is maintained in the upright position Whileinverting the said vyoke.

Signed at Los Angeles, Calif., this 17th day of January, 1928. Y

. j LLOYD D. KAY.

structed so that they will not match together j to form joints of thepattern.

2. In molding apparatus for molding Wheels or the like 1n a flask, apattern having a plate in combination With an annular patr tern membercorresponding to the rim of the Wheel permanently attached to the sideof the plate, and a central pattern member removably attached to theplate corresponding to the central part of the Wheel and matching withthe annular pattern member at points on a given radius to form acomplete pattern for the drag ofthe mold.v a second pattern having aplate in combination With an annular pattern member, corresponding tothe rim of the Wheel, permanently attached to the side of the secondnamed plate, and a central pattern member removably attached to thesecond named plate corresponding to the central part of the Wheel andmatching with the second named annular pattern member at points locatedat a different radius than the first named radius from the center of thepattern to form a complete pattern for the cope of the mold.

3. In molding apparatus for molding a Y Wheel or the like in a flask, apattern having a plate in combination with an annular pat# tern memberpermanently attached to it and corresponding to the rim of the Wheel,and including radial portions corresponding to the Cal

